Sieve.



PATENTBD OGT. 9, 19.06.

T. LOURIM.

SIBVE.

APPLICATION FILED JULY 27, 1905.

Witgesses:

FiTIRs'Cm, wAsnma-mu. 0. c4

THOMAS LOURIM, OF BATTLE CREEK, MICHIGAN.

S'IEVE.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed July 27,1905. Serial No. 271,509.

To all whom it may concern:

Be it known that I, THOMAS LOURIM, a citizen of the United States, residing at Battle Creek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Sieves, of which the following is a specification.

This invention relates to improvements in sieves. It is particularly advantageous as a riddle for molders use, although desirable for use in other relations.

The main object of this invention is to provide an improved sieve having a removable screen which is simple and convenient to use and rigid and durable.

Further objects and objects relating to structural details will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is fully illustrated in the accom- Ipanying drawings, forming a part of this specification, in which toline 3 3 of Figs. 1, 2, 5, and 6.

:Figure 1 1s a plan view of my improved sieve. Fig. 2 is an inverted plan view thereof. Fig. 3 is an enlarged cross-sectional view thereof, taken on a line corresponding Fig. 4 is an enlarged detail view taken on a line corresponding to line 4 4 of Fig. 3, showing struc tural details. .Fig. 5 is a detail elevation view showing the arrangement of the fixed catch b. Fig. 6 is an enlarged detail elevation showing the arrangement of the springcatch 1).

In the drawings similar letters of reference refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines.

Referring to the drawings, the sieve-frame" A is in the form of a band or rim. The frame A is formed of sheet metal. The upper edge of the band is rolled outwardly into a head a and onto the wire ring A. The lower edge of the band is rolled inwardly into the bead a and over a wire ring A. This serves to give the edges of the frame a finish and adds very greatly to the strength thereof. The bead a also serves as a handhold in grasping the sieve. The frame is also provided with annular beads a a, which add materially to its rigidityf By thus forming the frame it may be made of comparatively light material and still be. very strong. The lower head a projects inwardly, and the upper head 11 projects outwardly, so as not to interfere with the introduction of the screen. The lower bead a serves as a seat or support for the screen.

The frame is braced by cross-rods c. The

ends of these cross-rods are arranged through suitable perforations and bent down at 0 into the grooves formed by the bead a. This secures the brace-rods in a simple manner, and the ends are so protected that they are not likely to engage some exterior object.

The screen B is secured upon the wire ring B, which is adapted to fit loosely within the frame, so that it may be readily inserted or removed. The screen isheld upon'its seat by the catches b b. The catch 1) is fixed and preferably consists of a piece of sheet metal riveted to the frame and bent outwardly at its lower end. The catch 6 is a spring-catch and preferably consists of 'a spring riveted at its upper end to theframe and its lower end bent at substantially right angles and arranged through the frame, as clearly appears in Figs. 3 and 6, so that it may be grasped from the outside to release the screen.

In inserting the screen it is only necessary to engage one side thereof under the catch 1).

and press the same down onto its seat, the spring-catch I) being properly arranged to permit this. When in its seat, the springcatch snaps out over the screen, retaining it securely in position.

My improved. sieve is particularly adapted for use as a molders sieve or riddle, as the same is very light and at the same time very strong. The screen can be removed, as desired, for the purpose of renewing or it may be removed when clogged or gummed up for cleaning. As it is strongly supported by the ring B, I preferably clean by placing in a fire for a short time.

' If desired, one frame may be used for several screens of different meshes. I find this entirely practical onaccount of the ease and rapidity with which the screens may be removed from the frame or inserted therein.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, 'is

1. In a sieve, the combination of a frame consisting of a band or rim of sheet metal havin an outwardly-turned bead on its upper edge, an inwardly-turned bead on its lower edge, and an inwardly-projecting screen-supporting bead toward the bottom thereof; cross-rods 'of wire arranged through suitable perforations and turned down into the roove formed by said screen-supporting beacI; wire rings embraced by said beads at the edges of said band or rim; a screen; a wire ring to which said screen is secured, arranged to rest upon the supporting-bead therefor; a fixed catch secured at one side of said frame, consisting of a piece of sheet metalsecured at its upper edge, with its lower edge deflected inwardly; and a spring-catch arranged oppositely of said fixed catch, consisting of an inwardly and downwardly deflected spring secured at its upper end to said frame, and having its free end turned outwardly through a suitable slot in said frame to form afingerpiece by which it may be manipulated, for

, the purpose specified.

2. In a sieve, the combination of a frame consisting of a band or rim of sheet metal having an outwardly-turned bead on its upper'edge, an inwardly-turned bead on its lower edge, and an inwardly-projecting screen-supporting bead toward the bottom thereof; wire rings embraced by said beads at the edges of said band or rim; a screen; a

'wire ring to which said screen is secured arranged to rest upon the supporting-bead therefor; a fixed catch secured at one side of said frame, consisting of a piece of sheet metal secured at its upper edge, with its lower edge deflected inwardly; and a spring-catch arranged oppositely of said fixed catch, consisting of an inwardly and downwardly deflected spring secured at its upper end to said frame, and having its free end turned outward] y through a suitable slot in said frame having an inwardly-projecting screen-supporting bead toward the bottom thereof; cross-rods of wire arranged through suitable perforations and turned down into the groove formed by said screen-supporting bead; a screen; a wire ring to which said screen is secured arranged to rest upon the spring-supporting bead therefor; a fixed catch secured at one. side of said frame; and a spring-catch arranged. oppositely of said fixed catch, consisting of an inwardly and downwardly deflected spring secured at its upper end to said frame, and having its free end turned outwardly through a suitable slot in said frame to form a finger-piece by which gt gray be manipulated, for the purpose speci- 4. In a sieve, the combination of a frame consisting of a band or rim of sheet metal having a screen-support toward the bottom thereof; a screen; a wire ring to which said screen is secured, arranged to rest upon the said support therefor; a fixed catch secured at one side of said frame; and a spring-catch arranged oppositely of said fixed catch, consisting of an inwardly and downwardly deflected spring secured at its upper end to said frame, and having its free end turned outwardly through a suitable slot in said frame to form a fin er-piece by which it may be manipulated, for the purpose specified.

In witness whereof I have hereunto set my hand and seal in the presence of two witnesses.

THOMAS LOURIM. [L. s.]

Witnesses:

Orrs A. EARL, A. J. ALBER. 

